058f:9520 — Watchdata W 1981
Alcor Micro Corp.
- Vendor ID
- 058f
- Product ID
- 9520
- Combined
- 058f:9520
- Decimal
- 1423:38176
What is this device?
This is the USB identifier for a Watchdata W 1981 manufactured by Alcor Micro Corp.. The vendor ID 058f is registered to Alcor Micro Corp. with the USB Implementers Forum, and 9520 is the product ID that Alcor Micro Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 058f:9520 Alcor Micro Corp. Watchdata W 1981.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 058f:9520 Alcor Micro Corp. Watchdata W 1981
You can filter directly with lsusb -d 058f:9520, or get the full descriptor dump with lsusb -v -d 058f:9520. Kernel messages from dmesg show the same pair as idVendor=058f, idProduct=9520.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_058F&PID_9520 USB\VID_058F&PID_9520&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_058F&PID_9520"
macOS
$ system_profiler SPUSBDataType
Watchdata W 1981:
Product ID: 0x9520
Vendor ID: 0x058f (Alcor Micro Corp.)Driver help
Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page.
Raw usb.ids entry
The exact lines this page is generated from, in the upstream source file:
058f Alcor Micro Corp. 9520 Watchdata W 1981